#main_div {
  visibility: visible;
  display: inline-block;
  height: 800px;
  width: 1024px;
  text-align: center;
  background-repeat: no-repeat;
}
#menu_bar_div {
  background-repeat: no-repeat;
  background-image: url(../pic/menuBar.png);
  width: 348px;
  height: 504px;
}
#slide_content_div {
  -moz-border-radius: 5px;
  -webkit-border-radius: 5px;
  border-radius: 5px;
  height: 330px;
  width: 550px;
}
